Walter bitrniiam



(No Model.)

' W. BURNHAM.

STEAM JACKET CONNECTION.

N Patins Pham-Llumgmphef, wnsmngmn, m4 C NTTED STATES PATENT Fries.

IALTER BIIRNI-IAM, OF CHICAGO, ILLINOIS.

STEAM-JACKET CONNECTION.

SPECIFICATION forming part of Letters Patent'No. 394,825, dated December 18, 1888.

Application filed February 21, 1888. Serial No. 264,809. (No model.)

T0 all whom it may concern:

Be it known that I, WALTER BURNHAM, of Chicago, in the county ot' Cook and State ot' Illinois, have invented certain new and useful Improvements in Steam-Jacket Connections; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying'draw ings, and to the letters of reference marked thereon, which form a part ot' this specification.

This invention has for its object to provide a steam-j acketing for en gine-cylinders, steampipes, water-tanks, &c., and to secure the return of the water ot' condensation from the steam-jacketin space to the generator.

The invention is an adaptation of that illustrated and described in certain applications for patent filed by lWilliam Irving February 7, 1888, Serial Nos. 263,22l and 263,225, by which he has provided for the return of water of condensation and entrainment from a steam-pipe to the generator. For this purpose Mr. Irving connects with the steam-pipe a return-pipe hziving a descendingpart or leg which terminates in an open end beneath the water-level of the generator. In this terminal leg of the Irving return-pipe a column of water rises from the generator to a height necessary to equilibrity of pressure between the generator and the space in the ret-urnpipe above said water column, which space above the water column is in steam communication with the generator and is underless pressure than the steam-pipe, so that the excess of pressure in the steam-pipe produces a movement ot' steam toward the low-pressure chamber in the return-pipe. In the swift passage ot' the steam to the low-pressure chamber small bodies of water of condensation and entrainment which enter the returnpipe from the steam -pipe are swept along with the steam and delivered into the descending leg of the return-pipe, where it joins the water column and ultimately enters the generator.

My invention has for its object to adapt this principle to the perfection of steam-jackets for engine-cylin ders, steam-pipes,water-tanks, and other similar purposes.

Referring io the accompanying drawings, Figure l represents in end elevation an engine having a jacketed cylinder and steam chest, a generator in transverse vertical section, a tank having an inclosed steam-space or steam-jacket surrounding it, also in trans verse vertical section, a jacketed steain-supply pipe, connections for the supply of steam to the engine, to the jacket of the engine-cylinder, to the jacketing 0f the stea1n-supply pipe, and to the jacketing of the tank and for the return of the water of condensation of the several jackets. Fig. 2 is an enlarged central vertical section of the steam-supply pipe and the lower end of the steam-jacket thereof, together with the lower end of the pipe for the return of the water of condensation from said jacket, being a section in the line 2 2 of Fig. 3. Fig. 3 is a horizontal section in the line 3 3 of Fig. 2.

A represents a generator 5 B, a steam-engine C, a steam-supply pipe leading from the generator to the interior of the engine-cylinder; C', a valve in said steam-pipe, and C:2 the eX- haust-pipe.

The engine-cylinder and steam-chest are provided with a steam space surrounding them, (indicated exteriorly by the letter B,) of the usual or any desired construction. To this jacketing-space surrounding the enginecylinder leads a pipe, C3, from the steam-pipe C, said pipe C3 having a valve, C4. From the lower part of the steam-jacket space of the engine-cylinder leads a pipe, D, which rises to a point above the water-level in the generator A, and thence descends into the waterspace of said generator, where it terminates in an open end, d. For convenience, the 'descending portion of the pipe D is separately marked D', and will be briefi y called the leg of the return-pipe.

D2 is a stop-valve in the upper part of the leg D.

D3 is a check-valve above the valve D2 and near it, (here shown as being in the elevated transverse part of the return-pipe D, which may be called the leader.) In the leader of the return-pipe is located a drain-pipe, D4, provided with a valve, d', these features of the return-pipe corresponding generally with the preferred construction shown by Irving in his before-mentioned applications for patent. The operation of the return-pipe D is also that which is fully described by Irving and brieiiy IOO recapitulated in the foregoing portion o't'f this specitieation-that is to say, the generator being under steam-pressure and the returnpipe having' been emptied ot water and prepared tor operation by blmvng ottf through the cook d', steam entering the pipe C t'rom (l and'lilling l) eondenses or escapes above the water in the leg D', with the e't'teet of eausing a rapid movement ot' steam through the pipe C, c vliinler-jaeket l', an d return-pipe D, in whichmovementot steam the water ot'I eondensation formed; in the cylinder-jacket is ear ried in small detached bodies upward through said ppel), and is deposited in the leg D ot said pipe. There is thus provided a eonstant and active circulation ot live steam through thejaeket-space surroundingtheengine-eylinder, while the condense-water oi? sueh steam is promptly returned to the geilerator. Similar connections are shown with a steam-,iaeket, applied to the steam-supply pipe (l, the pipe supplying steam to the jaek t-spaee be tween C and C being' shown at C, and the return-pipe (answt ig to the pipe D already described) being' shown at Di. lhe pipe D5 will in practice be usually .required to lead upwardhigher than shown in the drawings to give suitable length of leg to contain the water column without overtiow ol the latter into the ascending part ot' the return-pipe.

In order to take the water very completely from the jaeketfspace surroinnlingt'hesteampipe C, the construction shown in Figs. 2 and I) may be employed, in which the return-pipe D5 connects .into the side of the jacket-shell, and the latter is provided with an interior depending hood, e, which connects at its sides and top with the jaeketi-pipe and reaches very nearly to the bottom ot' the jacket-space. This hood lorms an interior extension oit' the return-pipe, and in the sweep of steam beneath it all or praetieally all ot the water oit' condensation will be swept out oit the jacketspace.

E represents any t'orm ot' vessel surrouinled wholly or in part by a jacket, E', giving the steam-tight jaeketsspzwe e. \\'ith a suitable point ot' this spaee e is connected a steamsupply pipe, E2, provided. with a valve, E. The pipe 'tor the return ot water to the generator may be ot the simple Formotf construe tion and connection, shown at Dt", or ot that shown at l) as eonneeted with the engine-cylinder jaeket. l. have, however,illustratwl in connection with the tank-jacket e a special l'orm ot' return-pipeeonneetion, which maybe used with any other jacket. lin this case D, D7, and D form the return-pipe for the jacket e ot' the tank E, and DS is a pipe leading [from the st eanl-spaee ot' the Yjaeket e into this ,retu rnpipe below and near the junction oli'D'f' with D' The pipes Db and D`|- are shown provided with valves di d, respeetively; but thel latter ot' these is merely incidental to the (,'onneetion ofthe tank-jacket e with the same returnn pipe D that leads from the jaeket D ot` the engine-eylimler. The same is true ol the valve D" in the pipe D loeated in ad vanee ot' the ('fonneetion o` l) with l).

Then the engineeylinder is disuseththe valves C1 and D may be elosed, and, on the other hand, when the tank-jacket is disused the valves IC and d may be Closed. The valve d? and the valve Dl" in the steam-discharge pipe DH are, however, (.lesirable to the proper or to the most economical operation of the discharge-pipe conneetimis ot' a jacket comprising both pipes D and D. The pipe D has a drainage-eoimeetion with the jacket'- spaee e. As it delivers into the same pipe, D7, with the steam-pipe DS, an excessive outtlmv oli' steam may be preventwl by so iar elosing the valve (l2 as to allow only water to escape through it, and the valve Dl" may be also so far elosed as to permit only enough steam to pass it to carry ltn'ward the water from D". lt' the system embracing the engine and tank or other jaeketed vessel or ehamber, both connected with a single return-pipe, be employed, the steam from one jacket may be made to carry forward the wat er oli eondeusation from both jackets. 'For example, in the ease ol' the engilie-(wliilder and the tank-jackets of the drawings, having a common returiepipe, D, the stez'un-pipeQI)S in the tank-jacket maybe disused or omitted and the water from said jackete may he sent Forward by the steam from the jacket l. ln this ease the valve d in the r'lrain-plie DU maybe made servieeable by being set to deliver only water, or water with little steam, through D0, so that steam may he eorrespomlingly eeonomized.

The provision ot' a steam-pipe answering to D8 or leadiu g from the steam-space ot a chamber to be drained and into a pipe, D'i D, Afor the litfting ot: water taken f rom the chamber, is made the subject ol another application .for patent tiled by me ot' even date herewith.

I elaim as my inventionl. The Combination, with a steam-generator and an engineeylinder or other inelosure provided with a stean'l-jaeket space, ot' a pipe or pipes suppl ying steam to the jacket-spate anda pipe leading` t'rom said space back to the generator and containin a liquid column, whereby a circulation is induced and maintained outwardly through the steam-supply pipe leading to the jacket and baek to the generator through the retlu'n-pipe.

'lhe eombination, wi th a steam-generator and an engine-eylimler or other inclosure prov id ed with a steam-jacket spaee,ot a steamsupply pipe leadin to the jacket-space and a return-pipe having drainage-connection with the Jaeketspaee and leading to a point above the water-level of the generator, and thence downward to the generator t'or a distance sut'tieient to contain the water column due to the tlitti'erence in pressure between the generator and the spaee in the returnpipe above the water column.

3. The combination, with a steam-generator an d an inelosure provid ed w ith` a steam -j acket IOO IIO

space, of a steanl-supply pipe leading' to the jacket-space, a return-pipe having' drainageeonneotion Wi th the j aeketspaee, and having an ascending and a descending' portion, the latter of which terminates in the generator, and is provided with a liquid column of height due to the difference between the pressures above and bel ow it, whereby the Water formed in or taken into the eireuit is delivered into the `generator.

4. The eo1nbination,\vith a steam-generator and -a steam-pipe leadi n g' therefrom, of a j aoket-spaee surrounding the steam-p ipe, a steanr supply pipe leading into one end of the j aelietspaee, and a return-pipe leading Vfrom the other end of the jaeket-spaee to the generator and containing' a water-column in its leliv\ ery end, whereby a steam. eireulation is inof a return-pipe having drainage-eonneetion with the jacket-space and leading; to the generator and a pipe leading from the steamoeeupied part ot the jacket-space into the return-pipe.

In testimony that lv elaim the foregoing as my invention I at'fix my signature in presence 3o ot' two witnesses.

XVALTER BURNHAM.

\Vitn esses:

M. E. DAYTON, TAYLOR E. BROWN. 

